[news.eclipse.technology.buckminster] Re: Strange exceptions using headl

[Thomas Hallgren <thomas@xxxxxxx>]

Hi Vaidas,
of course. Stupid mistake. I'll correct this ASAP. Thanks for a very clear analyze. It does indeed 
help a lot.

Regards,
Thomas Hallgren

vaidasn@xxxxxxxxx wrote:
> Hi Thomas,
>
> Indeed this is circular dependency most likely caused by support for
> .product files. I have played a little more with it, here is what I get.
>
> The project is structured in this way:
>
> +product.plugin
> +--+product.product
> |  \--product.feature
> \-- ..
>
> +product.feature
> +--+feature.xml
> |  \--product.plugin
> \-- ..
>
> +other.plugins
> \-- ..
>
> Product file is in plugin. Product is feature based therefore it includes 
> the product.feature. On the other hand product.feature lists product.plugin 
> in its feature.xml. Before version 0.3.0 product files where not parsed so 
> there was no problem with my layout.
>
> I have tried several scenarios:
>
> 1) Materialize product.plugin. Then I get something working and I can 
> perform buckminster actions. However product.feature does not get 
> materialized. It seems that in this case product file is not considered by 
> buckminster.
>
> 2) Materialize product.feature. I get this error at resolve and can not 
> proceed further:
>
> Circular component dependency detected. Chain is product.plugin -> product.feature -> product.plugin
>
> 3) I add advisor node to my cquery:
>
> <advisorNode namePattern="product.feature" componentType="eclipse.feature" allowCircularDependency="true"/>
>
> Then I materialize everything successfully but get endless recursion on 
> perform action.
>
>
> I hope this information helps,
>
> Vaidas
>
> Thomas Hallgren wrote:
>
> > Hi Vaidas,
> > This is odd. I can't recall I've modified anything that would have an
> > impact on the resolver. Are the things you're working on proprietary or is
> > there a chance for me to look at it? I must get some more info somehow in
> > order to address this.
> >
> >  From the looks of it, you get an endless recursion in LocalResolver but
> >  I'm not sure why that would
> > happen. Any chance you have introduced a circular dependency? If you have,
> > it should be trapped and not result in a stack overflow so something is
> > definitely wrong, but I'm still curious.
> >
> > Regards,
> > Thomas Hallgren
> >
> > Vaidas Nargelas wrote:
> > > Hi Thomas,
> > >
> > > I have upgraded buckminster to r07488 and headless r07406 and I can no
> > > longer perform an action. When I do perform plugin_x#bundle.jar I get
> > > this exception:
> > >
> > > java.lang.StackOverflowError
> > >         at sun.nio.cs.UTF_8$Encoder.encodeArrayLoop(UTF_8.java:446)
> > >         at sun.nio.cs.UTF_8$Encoder.encodeLoop(UTF_8.java:517)
> > >         at java.nio.charset.CharsetEncoder.encode(CharsetEncoder.java:544)
> > >         at java.lang.StringCoding$StringEncoder.encode(StringCoding.java:240)
> > >         at java.lang.StringCoding.encode(StringCoding.java:272)
> > >         at java.lang.String.getBytes(String.java:947)
> > >         at java.io.UnixFileSystem.getBooleanAttributes0(Native Method)
> > >         at java.io.UnixFileSystem.getBooleanAttributes(UnixFileSystem.java:228)
> > >         at java.io.File.exists(File.java:733)
> > >         at org.eclipse.buckminster.core.metadata.WorkspaceInfo.getMaterialization(WorkspaceInfo.java:397)
> > >         at org.eclipse.buckminster.core.metadata.WorkspaceInfo.getMaterialization(WorkspaceInfo.java:419)
> > >         at org.eclipse.buckminster.core.resolver.LocalResolver.localResolve(LocalResolver.java:190)
> > >         at org.eclipse.buckminster.core.resolver.LocalResolver.deepResolve(LocalResolver.java:405)
> > >         at org.eclipse.buckminster.core.resolver.LocalResolver.deepResolve(LocalResolver.java:450)
> > >         at org.eclipse.buckminster.core.resolver.LocalResolver.deepResolve(LocalResolver.java:450)
> > >         at org.eclipse.buckminster.core.resolver.LocalResolver.deepResolve(LocalResolver.java:450)
> > >         at org.eclipse.buckminster.core.resolver.LocalResolver.deepResolve(LocalResolver.java:450)
> > >         at org.eclipse.buckminster.core.resolver.LocalResolver.deepResolve(LocalResolver.java:450)
> > >         at org.eclipse.buckminster.core.resolver.LocalResolver.deepResolve(LocalResolver.java:450)
> > >         at org.eclipse.buckminster.core.resolver.LocalResolver.deepResolve(LocalResolver.java:450)
> > >         ...
> > >
> > > I can successfully perform the action with r7034.
> > >
> > > Thanks,
> > >
> > > Vaidas